code: def __init__(self):
      self._l = qlex.lexer()
      self._p = _yacc.yacc(debug=False, write_tables=False)
  
imports: import yaml
  from guild import _yacc
  from .None import Select, Scalar, Attr, Flag
  from .None import ParseError
  from .None import qlex
label_desc: Use image node_id 1 to create a new parser object  with example: obj = parser()